You want to save an animation as both MP4 and GIF formats. Which approach correctly saves both files using matplotlib?
ACall <code>anim.save('anim.mp4')</code> and <code>anim.save('anim.gif')</code> without writers
BCall <code>anim.save('anim.mp4', writer='pillow')</code> and <code>anim.save('anim.gif', writer='ffmpeg')</code>
CCall <code>anim.save('anim.mp4', writer='ffmpeg')</code> and <code>anim.save('anim.gif', writer='pillow')</code>
DSave once as MP4 and rename file to GIF